21．In _______ nature, many animals and plants are now in _______ danger of dying out.
A. ×; × B. ×; the C. a; the D. a; a
22．The words, _______ steal vegetables (偷菜)，60th anniversary (60周年), humble abode (蜗居), have been on the list of 2009’s 10 news keywords made by Xinhua News Agency.
A. that is B. besides C. including D. included
23．—Could you please lend us your computer for the New Year’s party?
—_______.
A. Yes, you could B. Certainly not C. My pleasure D. Sure
24．Check it again in case any number _______.
A. will be left alone B. will be left out
C. is left alone D. is left out
25．The _______ boy was last seen ________ near the West Lake.
A. missing; playing B. missing; to play C. lost; to play D. lost; playing
